[vtkusers] tutorial, step1, Cone runs like a snail on OSX 10.5

Darren Weber darren.weber.lists at gmail.com
Thu Mar 12 18:12:51 EDT 2009 

I'm comparing Cone in the tutorial, step1 project on OSX vs. Ubuntu
(debian).  My OSX system is running so much slower than Ubuntu
(running on the same hardware, but under VMware v2.x).

On OSX 10.5  (see the project CMakeCache.txt attached):

[ dweber at XXX ~/src/kitware/vtkTutorial/Step1/Cxx ]$ time ./Cone

real	0m6.733s
user	0m0.233s
sys	0m0.186s


On Ubuntu  (x86_64, kernel 2.6.24, compiled with gcc 4.2.4 and nothing
special added to cmake config):

dweber at XXX ~/src/vtkTutorial/Step1/Cxx$ time ./Cone

real	0m0.469s
user	0m0.040s
sys	0m0.116s


Holy cow, how slow is OSX!  What's up with OSX?

I'm using the current package for libvtk5 (and libvtk5-dev) in Ubuntu
(synaptic package manager indicates version 5.0.3-1ubuntu1) and the
5-2-1 source build on OSX 10.5, using this build config:

export prefix="/opt/local"
#export LDFLAGS="-L${prefix}/lib"
#export CXXFLAGS="-I${prefix}/include"
cmake \
    -DBUILD_SHARED_LIBS:BOOL=ON \
    -DBUILD_EXAMPLES:BOOL=ON \
    -DBUILD_TESTING:BOOL=ON \
    -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
    -DCMAKE_INCLUDE_PATH:PATH=${prefix}/include \
    -DCMAKE_INSTALL_PREFIX:PATH=${prefix} \
    -DCMAKE_LIBRARY_PATH:PATH=${prefix}/lib \
    -DVTK_INSTALL_PREFIX:PATH=${prefix} \
    \
    -DVTK_USE_RPATH:BOOL=ON \
    -DCMAKE_INSTALL_NAME_DIR:STRING="${prefix}/lib/vtk-5.2" \
    \
    -DVTK_DATA_ROOT:PATH=${prefix}/share/vtk-5.2-data \
    -DVTK_USE_CARBON:BOOL=OFF \
    -DVTK_USE_COCOA:BOOL=ON \
    -DVTK_USE_INFOVIS:BOOL=ON \
    -DVTK_USE_PARALLEL:BOOL=ON \
    -DVTK_USE_RENDERING:BOOL=ON \
    -DVTK_USE_VIEWS:BOOL=ON \
    -DVTK_USE_X:BOOL=OFF \
    -DVTK_WRAP_JAVA:BOOL=OFF \
    -DVTK_WRAP_TCL:BOOL=ON \
    -VTK_TCL_TK_STATIC:BOOL=OFF \
    -DTCL_TCLSH:FILEPATH=/usr/bin/tclsh \
    -DTCL_INCLUDE_PATH:PATH=/System/Library/Frameworks/Tcl.framework/Headers \
    -DTCL_LIBRARY:FILEPATH=/System/Library/Frameworks/tcl.framework \
    -DVTK_WRAP_PYTHON:BOOL=ON \
    -DPYTHON_EXECUTABLE:FILEPATH=/opt/local/bin/python2.6 \
    ../VTK


What can I do to change this obvious speed issue?  Is this an inherent
problem with using Cocoa?  Should I add additional compiler options to
the VTK build for Cocoa - anything related to Obj-C?

Thanks, Darren
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